Twigg
NES Member
What do I need to fit a Colt upper onto my Anvil Arms lower ? I know it's got something to do with large pin vs small pin and/or some kind of adapter.
I can't seem to find a definate answer. Has anyone here built an AR from a Colt upper & AA lower ?
I'm sitting here scratchin' my head.
I can't seem to find a definate answer. Has anyone here built an AR from a Colt upper & AA lower ?
I'm sitting here scratchin' my head.